Mixing machine



MIXING MACHINE `Filed June 21. 1924 H. H; HAC KSTEDDE Aprilrz, 192s.

April 17, 1928.

H. H. HACKSTEDDE MIXING MACHINE Filed June 21. 1924 3 Sheets-Sheet gywwntoz April 17, 1928.

1,666,285 H, H. HACKSTEDDE MIXING MACHINE Filed June 21. 1.924 5 Sheets-Sheet 3 S11/ven T01: v l

Patented Apr. 17, 1928.

UNITED STATES HERBERT H. HACKSTEDDE, 0F CINCINNATI, OHIO,

MIXING MACHINE.

Application led June 21,

This invention relates to mixing machines for mixing dough, confections and the like, and the prime object of the invention is to provide for tempering the contents of the mixing bowl in a simple and efficient manner without interfering with the usual functions of the mixing machine.

In carrying out the invention I employ a bowl-holder which, in addition to its function of supporting the bowl, also co-operates therewith in a manner to form a jacket enclosing the bottom portion of the bowl and designed to receive a tempering fluid whereby the contents of the bowl may be either tempered. or cooked as desired.

A further object of the invention is to enable the usual lateral swinging of the bowl-holder into its operative and inoperative positions while at the same time maintaining the bowl-holder in communication with thc supply of tempering fluid.

A still further object of theinvention is to provide for convenientlyk and efficiently draining the bowl-holder to a predetermined tank or the like regardless of the position of the bowl-holder.

Another object of the invention is to effect a fluid-tight joint'between the bowl and the ,bowl-holder in a very simple and efficient manner and at the same time to permit of the convenient introduction of a mixing bowl into and removing the same out of the bowl-holder withoutv requiring any removal of the essential parts of the fluid-tight joint.

In the drawings:

Figure 1 is a vertical central sectional view of a mixing bowl-holder embodying features of the presentinvention, portions of a mixing machine being shown in dotted lines. f

Figure 2 is a plan view of the present invention.

Figure 3 is an enlarged sectional elevation on the line 3 3 of Figure 2.V

Figure 4 is an enlarged detail sectional view of the drain and blow-olf valve.

Figure 5 is an enlarged detail sectional view on the line 5 5 of Figure 2.

Figure 6 is an enlarged detail sectional view on the line 6 6 of Figure 2.

The holder of the present invention includes an open topped hollow substantially semi-sphericalbody 1 which constitutes a seat for the usual mixing bowl 2. Extending around the top of the seat body 1 there 1924. Serial No. 721,452.

is an internal annular horizontal flange 3 and a similar external flange 4, the top faces of the'two flanges being in the same plane. The mixing bowl 2 is equippedwith an external band 5 embracing the mixing bowl at about where tlie side walls thereof start to `curve inwardly and downwardly, and this band is rigidly secured to the bowl in any suitable manner. The internal diameter of the bowl supporting seat l is just sufficient to conveniently receive the bowl 2 whereby the band 5 may rest upon the top of the flange 3 and thereby support the bowl 2 within the seat 1 and spaced therefrom as well .shown in Figures 1 and 5v of the drawings. The space between the lower portion of the bowl 2 and the bowl supporting seat l is designed to receive a tempering fluid, suoli for instance as steam for heating purposes or water, hot or cold, for tempering purposes as will hereinafter be explained. A packing ring or gasket 6 covers the Harige at the top of the bowl support 1, and the band 5 rests upon this gasket. Outside of the band 5 is a ring 7 vwhich rests upon the gasket 6 and is secured to the flange 4 by suitable screw threaded fastenings 8 whereby the gasket 6 is conveniently held in place. A groove or channel 9 is provided in the top of the flange 3 and extends entirely around the latter. Communication between the bottom of the groove 9 and the space between the bowl support 1 and thev bowl 2 is afforded by passages 10, whereby steam pressure within said space is conducted into the channel 9 so as to force the gasket 6 snugly against the under sides ofthe band 5 and ring 7 .and thereby form a steam-tight joint. Thersame result is accomplished by water pressure when water is employed as a tempering medium. At intervals around the ring 7 there are upstanding bosses 11, and on the top of each boss there is a latch member 12 pivoted intermediate of its ends by means of a suitable fastening 13 extending through the latch and into the boss 11.

The outer end of the latch is provided with a handle or finger piece 14, while its inner end portion is shaped and designed to overhang the band 5 and thereby prevent upward ldisplacement of the bowl 2, particu- ,larly when the latter is under the influence machine is best shown in Figure 1 of the drawings, wherein 15 designates the base of some conventional mixing machine from which rises the usual standard 16', carrying at its top, or otherwise suitably located there-A on, an electric motor, not shown on the drawings, which motor, as usual, drives gearing contained in a housing designated 17 depending from the usual arm 18 extending ylaterally from the standard 16 and overhanging the top oit the bowl. A conventional forni of beater' 19 has been shown in dotted lines within the bowl 2 and depending 'from a beater shaltt 201eitending downwardly troni the gear casing 17. Extending laterally Yfrom thc standard 16 are upper and lower lugs 21 and 22 as are commonly found in the l-laclistedde type and other types o'l mixing machines, and between these lugs there is received a lug or ear 23 eX- `tending laterally from the back et the bowl support 1 and having its top flush with and constituting a continuation of the combined l vflanges 3 and Ll at the top of the bowl support. An upright pintle member 2/-1 extends through a vertical opening 25 in the car23 and projects upwardly and through an eye 26 in the lug 21 and downwardly through an eye 27 in the lug 22. The pintle is liXed to the ear 23 in any suitable manner, as for instance yby means ont a pin or key 28. lt will of course be under-stood'that the ring 7, which rests upon the top of the lug 23, is provided with an opening to accommodate "the pintle 211. rl`he pin'tle portion above the lug 21 is screw threaded and carries a nut .29 which rests upon the top of the lug 21 and constitutes, withv the pintle 24, a khanger on which the bowl support 1 is supported upon the standard 16 of the mixing machine. 'llie'pintle 2&1 ris capable of rotating in the eyes 26 and 27, and as the pintle and the bowl support 1 are rigidly connected, it will kbe understood that the bowl member may swing horizontally upon the pintle 211 as a vertical axis in order to provide for inserting and removing the bowl through'the-opcn top of the 'bowl support 1, and also to bring the bowl beneath and in alignment with the y gear casing 17 to permit o1' the operation ot the beater 19 to edect the usual mixing operations, As indicated in Figure 2, by dotted lines, it will be understood that the bowl support and the bowl carried thereby may be swung from an intermediate mixing position either 'to the right or to theleft into positions Yfor inserting and removing vthe bowl.

For the purpose of introducing a temper- Ving fluid into the bowl-holder 1, there is provided an upright supply pipe 80, thel lower end of which is connected to the top of the pintle 24 by a swivel joint 31 which includes a stung box, and the'upper portion of the pintle 24 is tubular or provided with a longitudinal passage 32 communicating at its upper end with the pipe 30 and at its lower end with a lateral branch passage 33 communicating with a port or opening 34 in the lug 23 'and the side of the bowl-holder 1 and also communicating with the interior of the bowl-holder. lt will thus be understood that any fluid passing supply while the other is in communication with a water supply, lhot or cold, as may be desired. rlhe branch pipe 35 is provided with a suitable controlling valve 37 and a suitable controlling valve 38 is provided Yfor branch 36, whereby the supply of lluid to the bowl support may be conveniently controlled.

For the purpose voit holding the bowl support fixed in its intermediate operating position, there is provided latch means mounted on the base 15 Aand including an upstanding casing 39 rising from the buse and housing av latch or bolt hea-d 410 projecting through the open 'top of the casing and having a stem 41 extending downwardly through the bottom of the casing and pivotally connected to a pedal or ilfoot lever l2 suitably pivoted vat 43 upon the base 1:3. i1 Ahelicalspring 111 within the casing bears at its lower end against the bottom oit the casing and at its upper end against the 'under side of the latch head so to yieldingly project the latter into engagen'ient with keeper 415 providedupon the iront bottoni .portion of the bowl support 1. vThe ybottoni oi the casing 39 constitutes a stop against which the lever-,112 engages so a-s to prevent cntire displacement of the latch head 10 from the casing. The toot controlled latch yhas the advantage that it leaves the hands ol the atteneant free tor manipulating 'the bowl-holder for moving the same into and out oit' mixing position.

Provision is made tor draining thebonl support 1 and for effecting an autoniatic blow-oil of steam before a dangerous piessure has been built up within the bowl support. In accomplishing these results, there is provideda valve casing L16 having connection 47 with Ione side ot fthe lower portion of the bowl support 1, the bottom oit the latter being provided with a depression 18 to accommodate the connection L17 and to bring it to the .lowermost portion ot' the rounded bottom oi? the bowl support 1. l/Vithin the valve casing there is a suitable valve L19 having a stem 50 projecting externally oiE the valve casing and engaged with the upright arn'rot a bell cranh lever 51 Ylulcrurned at 52 upon a bracket 53 Acarried by the valve castil) ing, there beinga suitable weight 54 adjustable upon the horizontal arm of the bell crank lever, whereby the valve 49 is yieldably held seated. Under excess pressure, the valve 4-9 will be opened and the pressure conducted from the bowl support by a pipe 55 leading from the bottom of the valve casing 46. Hand manipulation of the bell crank lever 5l may -be accomplished by means of an upstanding rod 56 pivoted to and rising Vfrom the horizontal arm of the bell crank lever 5l and having its upper screw threaded end passing through an opening in an extension''l of the flange 4 on the top of the bowl support and carrying at its upper end a suitable handle 5S having a nut portion engaging the screw threaded end of the rod 56. By screwing down upon the handle 58, the horizontal arm of the bell crank lever 51 may be lifted and maintained in a lifted position so as to permit draining of' the bowl support l through the valve elo and the pipe 55. lt is preferable to have the pipe 55 rather short and provided with an elbow 59 from which a horizontal pipe G() leads radially inward beneath the bowl support, and its inner end is provided with an elbow (5lV located in .alignment with the vertical center of the bowl support, and from this elbow (3l, another' pipe 62 extends radially and at right angles to the pipe (it) and leads to a vertically disposed elbow 63 which in turn is connected to an upright pipe 64 beneath and in vertical alignment with the pintle 24, and from this pipe 64. a pipe 65 leads to any remote tank or the like for receiving the drainings from the bowl support l. By locating the elbow 63 and the pipe ('34 in axial alignment with the pintle 9A; and providing a swivel joint (i6 for the pipe 64, the drain pipes do not interfere with the swinging of the bowl support into and out of its operative position.

When a mixing machine is equipped with the bowl support or holder of the present invention, the machine may function in its usual manner, and in addition thereto a tempering fluid may be conducted into the bowl-holder, which latter in cooperation with the lower portion of the bowl provides a jacket for containing the tempered fluid, whereby the contents of the bowl may be tempered during the mixing operation or prior thereto or subsequent thereto. Furthermore cooking operations may be carried on in the same bowl by the introduction of steam into the bowl-holder, thereby permitting of the use of a single bowl for the usual operations of mixing dough and confections and also for cooking fillings for confections and also for making soups and the like.

The construction of the present invention is, such that it may be conveniently applied to standard mixing machines which have a base, a standard and overhanging gearing for actuating a beater, and also are usually provided with upper' and lower lugs coi'- responding to the lugs 2l and 22 illustrated in the presentdrawings. The. presence of the present invention does not interfere in any manner whatsoever with the mixing operations of the machine and in addition thereto materially enlarges the scope of usefulness of the mixing machine in that the contents of the bowl may be conveniently tempered withina wide range of degrees and mixing` operations may be carried on while the contents of the bowl are being tempered or cooked.

Vhat is claimed is:

l. ln a mixing machine, the Combination with a base, a standard, and beater driving means carried by the standard and overhanging tlie base, of a bowl-holder carried by the standard and mounted to swing upon a vertical axis, said bowl-holder being open and unobstructed at its top for the introduction and removal of a bowl, said bowl-holder constituting a bowl enclosing jacket for the reception of a tempering fiuid, and means for supplying a tempering fluid to the bowlholder regardless of the position thereof.

2. In a mixing machine, the combination with a base, a standard, and beater driving means carried by the standard and overlianging the base, of a bowl holder carried bythe standard and mounted to swing upon a vertical axis, said bowl-holder being open and unobstructed at its top for the introduction and removal of a bowl, said bowlholder constituting a bowl enclosing jacket for the reception ot a tempering fluid, means for supplying a. tempering fluid to the bowlholder regardless of the position thereof, and means for draining the bowl-holder to a predetermined point regardless of the position of the bowl-holder.

3. In a mixing machine, the combination with a base, a standard, and beater actuating means carriedby the standard and overhanging the base, of a bowl-holder carried by the standard and mounted to swing upon a vertical axis, a bowl removably support- -ed within the bowl-holder and spaced from the walls thereof, means for supplying a tempering fluid through the axis of movement of the bowl-holder to the space between the holder and the bowl, a drain pipe, and a pipe connection leading from the bowlholder to the drain pipe and swiveled to the latter in alignment with the axis of movement of the bowl-holder.

4. A mixing machine provided with a bowl-holder constituting a bowl-enclosing jacket for the reception of a tempering fluid,

means to permit movement of the'bowlholder in a horizontal plane to and from its operative posit-ion, means for supplying a tempering fluid to the bowl holder regardless of the position thereof, and other means for draining the bowl holder to a predetermined point regardless of the position of the bowl holder.`

5. A mixing machine provided with a bowl-holder constituting a bowl-enclosing jacket for the reception of a temperingluid, said. bowl-holder being mounted to swing to a-nd fromI its operative position upon a vertical axis, meansA for supplyingv a tempering fluid to the bowl-holder and through the axisl of movement thereof, means for draining the bowl-holder having a swivel joint in alignment with the axis of movement of the bovvl-l1older.

6. A mixing machine provided with a bowl-holder constituting a bowl-enclosing jacket lor the reception of a tempering fluid, said bowlholder being mounted to swingl to and from its operative position upon a vertical axis, a drain pipe, and a pipe connection from. the bowl-holder to the drain pipe and. svvi-veled thereto in alignment with the axis of movement ol the bowleholder.`

7. ln a mixing machine, the combination With a standard having a pair of laterally projecting upper and lower lugs, a bowl-y holder constituting a bowl-enclosing jacket for the reception of a temperingfluid, said bowl-holder having a vertical pintle mounted` to turn in the lugs of the standard, said pintle having a longitudinal passage and' a lateral passage communicating with the in- Leeaaees terior of thel bowl-holder, and means for supplying a tempering flu-id to the longitudinal passage of the pint-le.

8. In a mixing machine, the combination of a' mixing bowl anda bowl-holder having an internal annular flange, they boWl being removably seated Within the holder and provided With an external band supported upon the flange of the bowl-holder, the bottom portion of the bowl being spaced from the bowleholder, means for supplying a tempering fluid under pressure into the space be tween; the bowl and the bowlholder, and a.

gasket between the flange and the band, the flange being provided on its top with an annular groove and also provided with passages communicating between the groove and the spa-ee between the bowl and the bowl-holder, the gasket coveringl the top of the groove.

9. A bowl-holder for mixing machines, comprising a body having an open top for the reception ot' a bowl, said body having an internal annular flange, the top of the flange having an annular groove and also provided with passages communicating between the interior ot' the bowlfholder and ihe groove, and a gasket loosely secured upon the top of the flange and covering the open upper side of the groove.

HERBERT H, naoxsrisnnn 

